On a Windows XP Computer, an Enforce Password History Option

Multiple Choice

On a Windows XP computer, an Enforce Password History option is configured with a value of 7. What does this option do?

A) Specifies that a user's password must be 7 characters in length. No other password lengths are accepted.
B) Restricts the user to log into his account with that password 7 times before the system requires him to change it.
C) Restricts a user's password length to less than 7 characters. Higher password lengths are not accepted.
D) Restricts the user from re-using an old password that was used in the last 7 password changes, including the current one.